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Phillip Co

Also Known As

  • Philip Co
  • Phil Co

Game Credits


Harry Potter and the Chamber of Secrets (2002)   (Design and Level Design)
New Legends (2002)   (Level Design)
Harry Potter and the Sorcerer's Stone (2001)   (Design and Level Design)
Requiem: Avenging Angel (1999)   (Lead Designer)

Quality Assurance

The Adventures of Batman & Robin (1995)   (Testers)
Desert Demolition Starring Road Runner and Wile E... (1995)   (Testers)
Eternal Champions: Challenge from the Dark Side (1995)   (Testers )
Ghen War (1995)   (Testers)
Killing Time (1995)   (Testers)
Shadow Squadron (1995)   (Assistant Leads)
Snow Job (1995)   (Testing Team)
Zaxxon's Motherbase 2000 (1995)   (Testers)
Zhadnost: The People's Party (1995)   (Lead Tester)
The Masked Rider: Kamen Rider ZO (1994)   (Testers)
Midnight Raiders (1994)   (Testers)


Diablo III (2012)   (The Diablo III Team would like to give special thanks to those who worked on the game in its early years at Blizzard North)
Uprising X (1998)   (Special Thanks)
Uprising: Join or Die (1997)   (Special Thanks To)


Half-Life: Alyx (2020)   (Valve)
Artifact (2018)   (Valve)
Counter-Strike: Global Offensive (2012)   (Valve)
Portal 2 (2011)   (Personnel)
Alien Swarm (2010)   (Valve)
Left 4 Dead 2 (2009)   (Valve)
Left 4 Dead (2008)   (Development Team)
Portal: Still Alive (2008)   (Personnel)
Half-Life 2: Episode Two (2007)   (Valve)
The Orange Box (2007)   (Credits)
Portal (2007)   (Valve Corporation)
Half-Life 2: Episode One (2006)   (Valve)

Developer Biography

Phil Co graduated from the University of Virginia School of Architecture in 1994 and moved to the San Francisco Bay Area shortly afterwards. He initially wanted to become a rock star, but eventually turned to video game design. He joined Cyclone Studios, where he worked on Requiem: Avenging Angel (1999). He went on to design levels at Infinite Machine, Knowwonder, and Blizzard North before coming to Valve in 2005. He is also the author of the book Level Design for Games.

Last updated: Sep 30, 2014

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